OMAPL138如何在Linux下使用EDMA3驱动

yyj · 发表于 2018-1-30 11:01:43

本帖最后由 yyj 于 2018-1-30 11:01 编辑

[code]EDMA sample test application8 J; Z- z$ O* i- E% V
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* edma_test.c
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*
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* brief EDMA3 Test Application
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*
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* This file contains EDMA3 Test code./ }$ U' {& O9 i
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* NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE( |/ V( H/ ~ [* g
* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT
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* TO CHANGE.. z6 P* @1 C1 g- ~( ~" Y, }0 L. w+ v0 k
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
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*
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* This program is free software; you can redistribute it and/or/ Q5 e9 K/ J3 t# S
* modify it under the terms of the GNU General Public License as5 A: c9 p" R- m8 k! v
* published by the Free Software Foundation version 2.
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*
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* This program is distributed "as is" WITHOUT ANY WARRANTY of any
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* kind, whether express or implied; without even the implied warranty8 L: \9 b9 ^( s4 s
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.( `7 d: ]! ]8 Y$ y1 ~3 m4 c7 B
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#include <linux/module.h>
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#include <linux/init.h>
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#include <linux/errno.h>
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#include <linux/types.h>
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#include <linux/interrupt.h>0 h# e+ g$ P! a4 t9 N
#include <asm/io.h>3 u& h# x$ m& j; ^9 H" S
#include <linux/moduleparam.h>
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#include <linux/sysctl.h>
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#include <linux/mm.h>, c& H; ?$ P5 D" j0 w) e
#include <linux/dma-mapping.h>4 G9 C" V7 h7 W! e/ q ?! t
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#include <mach/memory.h>
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#include <mach/hardware.h>
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#include <mach/irqs.h>
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#include <asm/hardware/edma.h>% Q4 u' |: d9 J/ I$ E6 w# ]) r% ~
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#undef EDMA3_DEBUG( P7 B1 f8 x9 }2 U) B5 _
/*#define EDMA3_DEBUG*/
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#ifdef EDMA3_DEBUG
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#define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)6 i: i/ s3 X: ~6 y( e9 a
#define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)
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#define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
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#else
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#define DMA_PRINTK( x... ) l) u! I8 I ^- Y
#define DMA_FN_IN
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#define DMA_FN_OUT. j! W! r, b; [4 u
#endif
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)
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#define STATIC_SHIFT 3: o& f, L* J7 b2 Z5 J" F
#define TCINTEN_SHIFT 206 x7 m1 e+ \9 q4 a& w* g! I
#define ITCINTEN_SHIFT 21
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#define TCCHEN_SHIFT 22/ T+ A5 B9 _% ^0 R6 _6 {5 i0 ]# x
#define ITCCHEN_SHIFT 23: N, _$ @% P3 s: ?+ b& g/ X
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static volatile int irqraised1 = 0;3 v9 |. e3 C% b7 E5 Q
static volatile int irqraised2 = 0;
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int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
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int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);$ n% J* n( `( b8 M+ H# D# f. `9 ]
int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);8 r! o! ~' G @9 [
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dma_addr_t dmaphyssrc1 = 0;. A2 u3 f8 c0 [* X* ?
dma_addr_t dmaphyssrc2 = 0;
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dma_addr_t dmaphysdest1 = 0;) r! s# c. |1 H. L8 P0 Q
dma_addr_t dmaphysdest2 = 0;
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char *dmabufsrc1 = NULL;, m9 E+ P, C& B! f9 z0 c
char *dmabufsrc2 = NULL;0 L- [9 v3 G! ]# n5 x9 U
char *dmabufdest1 = NULL;
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char *dmabufdest2 = NULL;% }0 O0 b# S; `' c4 i
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static int acnt = 512;% u8 b K- Y8 z( y" R) H; M5 f! U B7 s
static int bcnt = 8;
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static int ccnt = 8;; }1 \2 J# C9 h+ B d
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module_param(acnt, int, S_IRUGO);' h, N5 j3 b) X0 C
module_param(bcnt, int, S_IRUGO);- \7 Y, Z$ S; s7 W
module_param(ccnt, int, S_IRUGO);

复制代码

   这是在TI上找到的一个针对Davanci处理器简单的EDMA3驱动程序测试例程的一部分，我在编译的过程中是用
arm-none-linux-gnueabi-gcc  -I /home/tl/omapl138/linux-3.3/arch/arm/include -I /home/tl/omapl138/linux-3.3/include  EDMA3test.cpp -o EDMA3这个命令来链接库文件进行编译，但是报的错误特别多，我又试着一个函数一个函数往进加，仍然是很多错误。
   我想问一下如何用一个简单的程序来测试一下EDMA3的驱动。

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[未解决] OMAPL138如何在Linux下使用EDMA3驱动